TIGER/Line Shapefile, 2018, nation, U.S., Current Tribal Block Group National

Metadata Updated: October 12, 2019

The TIGER/Line shapefiles and related database files (.dbf) are an extract of selected geographic and cartographic information from the U.S. Census Bureau's Master Address File / Topologically Integrated Geographic Encoding and Referencing (MAF/TIGER) Database (MTDB). The MTDB represents a seamless national file with no overlaps or gaps between parts, however, each TIGER/Line shapefile is designed to stand alone as an independent data set, or they can be combined to cover the entire nation.

A tribal block group is a cluster of census tabulation blocks within a single tribal census tract delineated by American Indian tribal participants or the Census Bureau for the purpose of presenting demographic data on their reservation and/or off-reservation trust land. The tribal block groups are defined independently of the standard county-based block group delineation. For federally recognized American Indian Tribes with reservations and/or off-reservation trust lands with a population less than 1,200, a single tribal block group is defined. Qualifying reservations and/or off-reservation trust lands with a population greater than 1,200 could define additional tribal block groups within their area without regard to the standard block group configuration. Tribal block groups do not necessarily contain tabulation blocks always beginning with the same number and could contain seemingly duplicate block numbers. Tabulation block numbers are still assigned by using standard block groups, not the tribal block groups. To better identify tribal block groups, the letter code range A through K (except I, which could be confused with a number 1) is used uniquely within each tribal census tract.

The boundaries of tribal block groups and tribal census tracts are those delineated through the Tribal Statistical Areas Program (TSAP) for the 2010 Census.

Access & Use Information

License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

Downloads & Resources

Dates

Metadata Date October 10, 2019
Metadata Created Date December 14, 2018
Metadata Updated Date October 12, 2019
Reference Date(s) 2018 (publication)
Frequency Of Update notPlanned

Metadata Source

Harvested from 2018_tbg

Graphic Preview

URL for the TigerWeb Web Mapping Service

Additional Metadata

Resource Type Dataset
Metadata Date October 10, 2019
Metadata Created Date December 14, 2018
Metadata Updated Date October 12, 2019
Reference Date(s) 2018 (publication)
Responsible Party Unknown
Contact Email
Access Constraints Access Constraints: None, Use Constraints:The TIGER/Line Shapefile products are not copyrighted however TIGER/Line and Census TIGER are registered trademarks of the U.S. Census Bureau. These products are free to use in a product or publication, however acknowledgement must be given to the U.S. Census Bureau as the source. The boundary information in the TIGER/Line Shapefiles are for statistical data collection and tabulation purposes only; their depiction and designation for statistical purposes does not constitute a determination of jurisdictional authority or rights of ownership or entitlement and they are not legal land descriptions. Coordinates in the TIGER/Line shapefiles have six implied decimal places, but the positional accuracy of these coordinates is not as great as the six decimal places suggest.
Bbox East Long 179.859681
Bbox North Lat 71.439786
Bbox South Lat -14.601813
Bbox West Long -179.231086
Coupled Resource
Frequency Of Update notPlanned
Graphic Preview Description URL for the TigerWeb Web Mapping Service
Graphic Preview File https://tigerweb.geo.census.gov/arcgis/services/TIGERweb/tigerWMS_ACS2018/MapServer/WmsServer?REQUEST=GetMap&SERVICE=WMS&VERSION=1.3.0&LAYERS=Tribal Block Groups,Tribal Block Groups Labels&STYLES=default,default&FORMAT=image/svg+xml&BGCOLOR=0xFFFFFF&TRANSPARENT=TRUE&CRS=EPSG:4326&BBOX=32.501202,-112.203736,32.65104,-111.448354&WIDTH=1090&HEIGHT=751
Graphic Preview Type URL for the TigerWeb Web Mapping Service
Guid tl_2018_us_tbg.shp.iso.xml
Harvest Object Id c7210e33-23b8-4065-9e21-40934a951ae9
Harvest Source Id 9e141638-caf7-446c-938e-bc803101c718
Harvest Source Title 2018_tbg
Licence
Metadata Language
Metadata Type geospatial
Progress completed
Spatial Data Service Type
Spatial Reference System
Spatial Harvester True
Temporal Extent Begin 2017-06
Temporal Extent End 2018-05

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